Results 41 to 50 of about 56,308 (175)

On the astronomical origin of the Hallstatt oscillation found in radiocarbon and climate records throughout the Holocene

, 2016
An oscillation with a period of about 2100-2500 years, the Hallstatt cycle, is found in cosmogenic radioisotopes (C-14 and Be-10) and in paleoclimate records throughout the Holocene. Herein we demonstrate the astronomical origin of this cycle.
Bianchini, Antonio, Milani, Franco, Ortolani, Sergio, Scafetta, Nicola   +3 more
core   +1 more source

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source

Wavelet analysis of the seismograms for tsunami warning [PDF]

Nonlinear Processes in Geophysics, 2010
The complexity in the tsunami phenomenon makes the available warning systems not much effective in the practical situations. The problem arises due to the time lapsed in the data transfer, processing and modeling.
A. Chamoli, V. Swaroopa Rani, K. Srivastava, D. Srinagesh, V. P. Dimri   +4 more
doaj   +1 more source

Integrating simultaneous interfacial shear rheology with neutron reflectometry for structural and dynamic analysis of fluid interfacial systems

Journal of Applied Crystallography, EarlyView.
We present a new setup at the FIGARO horizontal neutron reflectometer enabling simultaneous measurement of the structural and mechanical properties of liquid interfaces, combining neutron reflectometry with interfacial shear rheology.The study of the structure and mechanical properties of complex fluid interfaces has attracted growing interest in ...
Pablo Sánchez-Puga, Javier Tajuelo, Javier Carrascosa-Tejedor, Miguel Ángel Rubio, Philipp Gutfreund, Armando Maestro   +5 more
wiley   +1 more source

A quantitative model for cyclotron wave-particle interactions at the plasmapause [PDF]

Annales Geophysicae, 1998
The formation of a zone of energetic electron precipitation by the plasmapause, a region of enhanced plasma density, following energetic particle injection during a magnetic storm, is analyzed.
D. L. Pasmanik, V. Y. Trakhtengerts, A. G. Demekhov, A. A. Lyubchich, E. E. Titova, T. Yahnina, M. J. Rycroft, J. Manninen, T. Turunen   +8 more
doaj   +1 more source

Coal and fuel burning effects on the atmosphere as mediated by the atmospheric electric field and galactic cosmic rays flux [PDF]

, 2009
: Emissions into the atmosphere of Greenhouse Gases (GHGs) and particulate matter resulting from fossil fuel burning are considered to be the main anthropogenic forcing on the global climate.
Reis, A. Heitor, Serrano, Claudia
core   +2 more sources

Application of Multi‐Method Dating for Understanding the Gravettian North of Moravia, Central Europe

Archaeometry, EarlyView.
ABSTRACT This article presents the results of integrating three methods to assess the age of the Upper Palaeolithic site of Pietraszyn 11 (SW Poland), close to the Moravian Gate. Sediment chronology determined using optically stimulated luminescence produced promising, yet ambiguous results (51.0 ± 3.7 to 20.3 ± 0.7 ka).
A. Wiśniewski, B. Bujalska, D. Popović, M. Baca, K. Zarzecka‐Szubińska, A. Lemanik, M. Hein, S. Talamo, P. Moska, H. Fewlass, D. Tokarz, Z. Jary, B. Przybylski, D. Bobak, M. Połtowicz‐Bobak, K. Wertz, A. Nadachowski   +16 more
wiley   +1 more source

Low-frequency ionospheric sounding with Narrow Bipolar Event lightning radio emissions: energy-reflectivity spectrum [PDF]

Annales Geophysicae, 2008
We analyze data on radio-reflection from the D-region of the lower ionosphere, retrieving the energy-reflection coefficient in the frequency range ~5–95 kHz.
A. R. Jacobson, R. Holzworth, X.-M. Shao
doaj   +1 more source

Origin of the highest energy cosmic rays observed

, 2000
Introducing a simple Galactic wind model patterned after the solar wind we show that back-tracing the orbits of the highest energy cosmic events suggests that they may all come from the Virgo cluster, and so probably from the active radio galaxy M87 ...
Antonov, Beck, Biermann, Biermann, Breitschwerdt, Burke, Cunningham, Eun-Joo Ahn, Farrar, Ginzburg, Gustavo Medina-Tanco, Hillas, Krause, Kronberg, Medina Tanco, O'Dea, Papadopoulos, Parker, Peter L. Biermann, Ryu, Seemann, Sigl, Simard-Normandin, Snowden, Staney, Takeda, Takeda, Todor Stanev, Vallée, Wiebel-Sooth   +29 more
core   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source